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For the Inventor, By the Inventor

Kawasaki, Japan

Masayuki Hongu

This inventor holds 28 USPTO granted patents, primarily in Television Technology. Top assignee: Sony Corporation. Active years: 1976-1987.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masayuki Hongu. Retrieved from https://idiyas.com/inventor/masayuki-hongu

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

USPTO Granted Patents = 28

% Patents Active = 100.0

Average Co-Inventor Count = 2.6

ph-index = 9

Forward Citations = 390(Granted Patents)


Location History:

  • Komae, JA (1976 - 1978)
  • Komae, JP (1978 - 1980)
  • Kawasaki, JP (1979 - 1983)
  • Kanagawa, JP (1986 - 1987)

Company Filing History:

goldMedal28 out of 58,145 
 
Sony Corporation
 patents

Years Active: 1976-1987

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Areas of Expertise:
Picture-In-Picture
Television Receiver
Automatic Fine Tuning
Signal Amplifying
Carrier Regenerating
Demodulating Apparatus
Multi-Band Tuner
Oscillating Circuit
Gain Control Circuit
Transistor Biasing
Dark Level Restoring
Synchronous Detection
28 patents (USPTO):Explore Patents
1. 4673983 - Picture-in-picture television receivers (1987-06-16),
2. 4631589 - Dark level restoring circuit (1986-12-23),
3. 4419695 - Television sound receiver (1983-12-06),
4. 4370676 - Carrier regenerating circuit for a synchronous detector (1983-01-25),
5. 4322751 - Detector circuit for a television receiver (1982-03-30),
6. 4283792 - Automatic fine tuning circuit (1981-08-11),
7. 4263675 - AFT circuit (1981-04-21),
8. 4261016 - Television receiver (1981-04-07),
9. 4238771 - Muting circuit (1980-12-09),
10. 4234963 - Synchronous detector particularly adapted for a video IF signal (1980-11-18),
11. 4198650 - Capacitive-type nonlinear emphasis circuit (1980-04-15),
12. 4169248 - Oscillating circuit (1979-09-25),
13. 4165498 - Variable delay device (1979-08-21),
14. 4163196 - Demodulating apparatus with phase shift compensation (1979-07-31),
15. 4156255 - Television receiver with synchronous detection and automatic fine tuning (1979-05-22),

Title: Masayuki Hongu: Innovator in Television Technology

Introduction

Masayuki Hongu, a prominent inventor based in Kawasaki, Japan, has made significant contributions to the field of television technology through his innovative designs and patents. With a total of 28 patents to his name, his work showcases advancements that have greatly improved the functionality and user experience of television receivers.

Latest Patents

Two of Hongu's latest patents exemplify his ingenuity in the realm of picture-in-picture technology. The first patent involves a sophisticated picture-in-picture television receiver. In this invention, the subpicture signal undergoes A-D conversion, allowing for enhanced synchronization and stability when the subpicture is displayed alongside the main picture. This process eliminates data variation, ensuring a smooth and coherent viewing experience.

The second patent focuses on a dark level restoring circuit. This innovation addresses the issue of dark signal components in video signals by employing feedback control to align the dark peak level with a preset pedestal level. As a result, the color reproduction and brightness remain stable, unaffected by the dark restoring operation, which enhances overall picture quality.

Career Highlights

Masayuki Hongu has built his career at Sony Corporation, where he has developed and refined his ideas into practical applications. His work has not only advanced television technology but has also contributed to the greater goals of the electronics industry. His number of patents stands as a testament to his creativity and technical expertise, solidifying his reputation in the field.

Collaborations

Throughout his journey, Hongu has collaborated with talented individuals such as Masaharu Tokuhara and Hiromi Kawakami. These partnerships have allowed for innovative brainstorming and have led to the development of several key technologies within Sony Corporation. Together, they have pushed the boundaries of what is possible in television design.

Conclusion

Masayuki Hongu is a remarkable inventor whose contributions have helped shape the television industry. With a focus on enhancing picture quality and user experience, his patents demonstrate a commitment to innovation. As technology continues to evolve, the influence of inventors like Hongu remains crucial in driving forward new advancements and improving consumer technology.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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